At non controlled airfields the French use a common frequency 123.5. Pilots should prefix their calls with airfield they are intending to use, and listen out for calls from traffic at that airfield. That way you get situation awareness long before arriving, and so should know wx, cct direction, r/w in use etc. To just barge in blind and do some idiotic British OHJ is at best rude, at worst suicidal. Of course you must have adequate French knowledge, or stay away.
